Improvement in apparatus for cleaning and polishing coffee



.J. H. BROOKM IRE. APPARATUS FOR CL'EANING AND POLISHING COFFEE.

No 192,224. Patent ed J'une19,1877.

JYZZEMB .5.

Mair/eases, f I wineswo mzv e 2. M %z%% UNITED STATES PATENT OFFICE.

JAMES H. BROOKMIRE, OF ST. LOUIS, MISSOURI.

IMPROVIYEMENT m APPARATUS FOR CLEANlN GAND POLISHING con-"s5.

Specification forming part of Letters Patent No. 192,224, dated June 19,1877; application filed April (i, 1877.

Too whom it may concern 1 -Be it known that 1, JAMES H. BRooKMIRn, ofSt. Louis, in the county of St. Louis and State of Missouri, haveinvented an Improved Apparatus for Treating and Polishing Coffee, ofwhich the following is a specification:

This invention relates to improvements in the process of treating andpolishing coffee, as described and shown in my respective LettersPatents of the United States, issued to me and bearing dates December 6,1876, N 0. 109,865, and October 15, 1872, No. 132,136.

In the use of my former patents the necessity is'incurred of repassingthe treated coffee (viz., that which has been cleaned) through theapparatus again for the purpose of polishishing said treated coffee.This, as is appa rent, incurred extratime, labor, and expense.

In the presentinvention the necessity spoken of is obviated bysubjecting the coffee to the required cleaning and polishing action inone and the same process.

My invention consists, first, in providing the bottom of feed-hoppercontaining the polish with an adjustable slide to control the feeding ofsaid polish; secondly, in combin ing, with relation to the hoppercontaining the polish and the revolving shaft, a crank'rod and rakeattachment, so as to prevent the polish from choking the perforations,and facilitating the feeding of said polish to the coffee subject totreatment; thirdly, this invention relates to a novel combination of theparts to achieve the advantages, all of which will hereinafter morefully appear.

Of the drawing, Figure l is a sectional elevation. Fig. 2 is a part topplan. Fig. 3 is a front elevation.

A is the cylinder inwhich the coffee is treated. The bottom of thecylinder has the perforations a. at, those to the right of center beingmore specially for the escape of the dust, dirt, chafi, 850., whilethose to the left are for the discharge of the polish.

B is the discharge-chute. This I provide with a slide, 0, which is madeto extend into the chute to close (as if it were a partition) thedischarge-opening.

c is a fixed bearing and guide for the slide. (See Fig. l.) The slide 0can be raised or lowered-hence its elongated slot 0 (See Fig. 3.) Theset-screw 0 holds theslide I adjusted position. (See Figs. 1, Byt'his;means the chute B can be closed or opened, or only partially opened, asthe case may be, to accomplish the important result, viz., to suit thedischarge-of the coffee according to the treatmentit requires inthecylinder, and specially so regarding its polishing.

D is the revolving shaft. This carries the heaters. I utilize therevolution of this shaft for thefurther purpose to agitate, stir, andfacilitate the feeding of the polish by the following means: at is acrank-rod secured to one end of the shaft. (See Figs. 1, 3.) 7 To theend of the crank is secured a rod, D, bent and passed over the top ofthe cylinder, as shown in Fig. 1. The top end of the rod D is passedinside the hopper E and bent down ward so as nearly to reach the bottomof said hopper. (See Fig. 1.) The bottom of the hopper E hasperforations 0, (see Fig. 1,) through which the polish passes to reachthe cylinder.

6 is a raker, (consisting of a perforated bottom, having teethprojecting from its lower face,) said rake being secured to thecrankrod, so as to be operated by same. The holes in the raker permitthe polish to pass through it, and its teeth rake over the perforatedbottom of the hopper, thus preventing the polish from choking or closingsaid perforations. The action of the crank-rod, as is apparent, impartsa reciprocating action to the raker .0, so that the same keeps thepolish moving and feeding into the cylinder.

It is important to control the feeding of the polish to suit therequirements of the cleaned coffee. This I do by providing the bottom ofthe hopper E with an adjustable slide, F. (See Figs. 1, 2.) The slide Fhas in its shank an elongated slot, f, and is secured to the topofcylinder by aset-screw,f. The slide proper passes through acorresponding slot in the side of the feed-hopper. By moving the slideto the right or left the polish can be shut off from or let into thecylinder-i. 0., its feeding can be such as is required to polish thecoffee.

It will here be noticed that both slides O and F are related to eachother, for the discharge of the cofl'ee takes place subject to theprocess of cleaning and polishing. The passage and discharge of thecoffee is regulated by the slide 0 in accordance with the feeding of thepolish, which is regulated by the slide F. In this wise the coffee,according as its nature requires, can be subjected-$0 a cleaning,scouring, and polishing action before its final discharge out of thecylinder.

The said improvements, being thus con structed and arranged, operate asfollows: The coffee to be cleaned is fed into the hopper G, and passesinto the cylinder, where it is subjected immediately to the action ofthe beatersor pins. The dirt, dust, and impurities pass out of theperforations a, and these, for this purpose, are made more numerous thanis required for those of a. By the time the cofl'ee has been forcedalong and brought in line of the hopper E and the polish, said coffeehas been sufficiently cleaned, scoured, and freed from its impurities,and in ready condition to be polished. The polish fed into the hopper Eat this stage of the passage of the cleaned coffee is caused by therevolving beaters to cover each grain and kernel, and, these beingcontinually stirred and moved among the polish, are fed forward to thedischargechute. The raker in the hopper and polish rakes some intocylinder, the feed-opening having been regulated by the slide F,likewise the discharge having been properly regulated by setting theslide 0 in position. I am thus enabled, at one and the same time, in thesame apparatus. to free, clean, and scour the entered coffee from itsimpurities, and also, before its discharge, polish said treated coffee,and thus achieve the advantages of a great saving in time, expense, andlabor, which, as before stated, was the object of this invention.

What I claim is- 1 The adjustable hand-slide F, in combination withhopper E, having perforated bottom 6, as and for the purpose set forth.

2. The crank (1, rod D, and raker e, in combination with hopper E andpower-shaft D, to operate as and for the purpose set forth.

3. The combination of the adjustable handslide F, the hopper E, havingperforated bottom 0, the adjustable hand-slide O, the discharge-chute B,said parts being arranged with relation to cylinder A, as shown, and bymeans whereof the discharge of the entered coffee can be regulated so asto be subjected at same time to required polishing action, and as setforth. p

In testimony of said invention I have hereunto set my hand.

JAMES H. BROOKMIRE.

Witnesses:

WILLIAM W. HERTHEL, JOHN W. HERTHEL.

